sheldos



(No Model.) R. B. SHELDON.

SPRING HOE FOR GRAIN DBILLS, SEEDERS, M.

No. 357,862. Patented Feb. 15, 1887 IN [[EIIIIIIIIIIIIIIM v.mmllmunlumnmmmmn IHHIIIIIIIWNIIIUSIIIIR IiIlHH mmmmnlgmmmmllmml nWITNESSES I I INVENTOR N PETERS. Pmmh u hm'wmmm, D. C.

UNITE STATES PATENT OFFICE.

RICHARD B. SHELDON, OF SHORTSVILLE, NEW YORK, ASSIGNOR TO THE EMPIREDRILL COMPANY, OF SAME PLACE.

SPRING-HOE FOR GRAIN-DRILLS, SEEDE RS, 800.

SPECIFICATION forming part of Letters Patent No. 357,852, dated February1887.

Application filed September 3, 1886. Serial No. 212,692. (No model.) 7

T0 aZZ whom it may concern.-

Be it known that I, RICHARD B. SHELDON, of Shortsville, in the county ofOntario and State of New York, have invented certain I111- provements inSpring-Hoes for Grain-Drills, Seeders, &c., of which thefollowing isaspecification.

My invention relates to improvements in the details of a yielding .drilltooth or hoe which is at present known in the art, the improvementhaving in view a reduction in the cost of construction, as well as otherincidental advantages.

In the accompanying drawings, Figure 1 represents a drill-hoe complete.Fig. 2 is a perspective view of the part to which my improvementrelates. Fig. 3 is a longitudinal section of the same through itscenter. Fig. 4 is atransverse section on the line as w of Fig. 3. Fig. 5is a bottom plan view of the same.

Referring to Fig. 1, A represents a drill tooth or hoe connected at itsupper end by a pivot, a, to the rear end of a drag-bar, B.

0 represents an arm or brace pivoted to the hoe b and extending thenceupward through the drag-bar to the upper end of a central pivoted link,D, the lower end of which is urged backward by the pressure of a rod, E,encircled and actuated by a spiral spring, F. The spring, acting throughthe intermediate parts, tends to maintain the hoe in its normalposition; but whenever the hoe encountersa dangerous resistance itovercomes the spring, and the link D, turning on its pivot, releases thearm 0, allowing the point of the hoe to swing backward.

The foregoing parts are in their-general construction and arrangement ofthe ordinary character, and are not broadly claimed herein.

My improvement relates solely to the peculiar construction of the leverD. Heretofore this lever has been cast with the central trunnions, thelongitudinal slot, and the notches in one end, as shown in the drawings,but without the pivot c and the studs (2.

My improvement consists in forming the entire link complete and readyfor use in one piece with the pivot c to receive the end of the rod E,and with the external studs or projections, (Z, which are intended toco-operate with an implement used to compressthe spring when assemblingthe parts at the time of their manufacture.

I commonly arrange the parts, as shown in the drawings, with the studs dthrown slightly out of line with the pivot 0; but this is not animportant feature. By casting the pivot c and studs d integral with thebody of the lever I am enabled to avoid the expenditure of time andlabor which would otherwise be required in drilling the leverandapplying the pivot and studs thereto, secure the required positionor" the parts with precision in every case, and give to the device astrength greater than it would otherwise possess.

I am aware of the construction represented in Letters Patent to J. S.Heath, No. 281,874, and I lay no claim thereto, my invention con sistingin the improved construction herein recited, whereby the expense ofmanufacture is reduced and other advantages obtained.

Having thus described my invention,what I claim is 1.Thehercin-described lever D, having the pivot c and studs d formedintegral therein.

2. As a new article of manufacture, the herein-described link 1), castcomplete in one piece with the grooved body, the central trunnions, thenotched arms at one end, and the pivot c and stud (Z at the oppositeend.

In testimony whereofI hereunto set my hand, this th day of July, 1886,in the presence of two attesting witnesses.

RICHARD B. SHELDON.

Witnesses:

FRED A. TIIUS, OLIVER S.'TITUS.

